Car-coupling



UNITED STATES PATENT OFFICE.

THOMAS B. MCDERMOTT, OF PORTLAND, OREGON.

CAR-COUPLING.

SPECIFICATION forming part of Letters Patent No. 501,805, dated July 18,1893.

Application tiled March 23, 1893. Serial No.467,315. (No model.)

To all whom it may concern:

Be it known that I, THOMAS B. MCDER MOTT, a citizen of the UnitedStates, residing at Portland, in the county of Multnomah and State ofOregon, have invented a new and useful Gar-Coupling, of which thefollowing is a specification.

The invention relates to improvements in car couplings.

Thel object of the present invention is to simplify and improve theconstruction of pin and link car couplings, and to provide one whichwill be automatic in its operatiompositive and reliable, and which willnot necessitate persons going between cars.

The invention consists in the construction and novel combination andarrangement of parts hereinafter fully described, illustrated in theaccompanying drawings and pointed out in the claim hereto appended.

In the drawings-Figure l is a vertical sectional view of a car couplingconstructed in accordance with this invention. Fig. 2 is a horizontalsectional view.

Like numerals of reference indicate correspending partsin both thefigures of the draw- Invs.

Idesignates a draw-head having vertical coupling pin perforations 2 andprovided with an enlarged link opening or cavity 3, in which is mountedon a horizontal pin It, a pivoted pin support 5 adapted to hold acoupling pin 6 in an elevated position and to be tilted rearward by thelink of an approaching car to withdraw its support from the coupling pinto cause the latter to fall and engage the link 7. The pin support isnearly equally balanced on the pin 4, whereby it may be readily tiltedrearward by the weight of one end of a link. The front portion of thepin support has an inclined upper face 8 when it is in its normalposition preparatory to coupling, as illustrated in dotted lines inFig.l of the accompanying drawings, to direct a link into engagementwith ashoulder 9 should the link be exceptionally short to cause the pinsupport to operate. The back of the pin su pport is provided at the topwith a forwardly extending portion or Ilange 10 which, when the pinsupport isin its normal position preparatory to coupling, extendsforward beneath the upper portion of the coupling pin perforation toform a rest forthe coupling pin 6. The coupling pin is caused to descendby the link 7 engaging the pin support beneath the ilange 10 at whichpoint the pin support is hollowed out as shown. The top of the pin isprovided with an eye 1l and any suitable means may be provided forelevating the pin for uncoupling, from the sides and top of a car.

When the coupling pin is elevated and supported in position preparatoryto coupling, the front portion of the pin support rests upon the bottomof the draw-head as illustrated in dot-ted lines in Fig. l, and noauxiliary mechanism is required for preserving the pin support in thisposition. The pin support is of the same width as the opening or linkcavity of the draw-head and presents its upper face to the link onemptying the draw-head.

It will be seen that the car coupling is simple, and inexpensive inconstruction, that it is automatic, positive and reliable in operation,and that it does not necessitate persons going between cars.

Changes in the form, proportion and the minor details of constructionmay be resorted to without departing from the principle or sacrificingany of the advantages of this invention. The front portion of the pinsupport is provided with an opening 12 through which the coupling pinfalls when the support is withdrawn.

What I claim is.-

In a car coupling, the combination of a drawhead having a coupling pinperforation, and a link opening or cavity, apin support mount` ed in thedraw-head and having its front portion adapted to rest upon the bottomof the draw-head and provided at its rear portion with aforwardlyextending supportingtlange l0, said pin supportbeing of thesame width as the opening of the draw-head and provided on its upperface between its ends with a shoulder 9, a horizontal pin supporting thepin support, and a coupling pin, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

THOMAS B. MODERMOTT.

Witnesses:

A.'J. CLARK, W. H. SMITH.

